Combined typewriting and computing



Oct. 1, 1940. H." L. PITMAN 2,216,627

COMBINED TYPEWRITING AND COMPUTING MACHINE Filed April 9, 193 9Sheets-Shet 1 ATTORNEY Oct. 1, 1940. H. PITMAN cousman nrswnnme ANDcomm-me mourns Filed April 9, 193 9 Sheets--Sheecv 2 INVENTOR Oct. 1,1940. H. 1.. PITMAN cousman 'ryrawnnme AND comru'rme u'Acam-z FiledApril 9, 193 9 Sheets-Sheet 3 Oct. 1, 1940.

Filed April 9. 193' H. L... PITMAN COIINBD TYPEWRITING AND COMPUTINGMACHINE azian S'Sheets-Sheet 4 INVENTOR day 41%;

ATTORNEY.

Oct. 1, 1940. H, P|TMAN 2,216,627

I QOMBINED'TYPEWRITING AND COMPUTING MACHINE Filed April 9, 193 9Sheets-Sheet 5 OLD BALANCE INVOICE DATE DESCRIPTION XXXXXXXXXXX II 24DECZG 56 I2 26 INVENTOR:

Oct. 1, 1940. H. L. PITMAN COMBINED TYPEWRITING AND COMPUTING MACHINEFiled April 9, 19s

9 Sheets-Sheet 6 INVENTOR' ATTORNEY.

Oct. 1, 1940. PlTMAN 2,216,627

COMBINED TYPEWRITING AND COMPUTING MACHINE Filed April 9, 19s." 9Sheets-Sheet 7 H Mm /a3 a w w w M /a/ John Brown 9 I A39 1452 AlfconAve. 5 an Zl3- Smit hville 60 M ow BALANCE mvolcfi'rin DATE DE I I25 00u. 2i DEC16ZS6 r9 I2 50 36 miczesa 34 00 L Oct. 1, 1940. H. PITMAN2,216,627

COMBINED TYPEWRITING AND COMPUTING- MACHINE Filed A ril 9, 193' 9Sheets-Sheet a I. w I I a I Oct. 1, 1940. pn- 2,216,627 I COMBINEDTYPEWRITING AND COMPUTING MACHINE Filed April 9, 1937 9 Sheets-Sheet sf2/4270 H H 5 37! K 220 i w w:-

A H- 37; 226- F1926; 576 370 776 /Z7 3/2 3/4 W H 22 I" xw DATE 11 240502636 Xxxx I56 12 INVOICE NO. DATE 1 1 24 DEC 26 36 XX mq: v Q i n n n24 T. 1

INVENTORZ ATTORNW Patented Oct. 1, 1940 UNITED STATES PATENT OFFICECOMBINED TYPEWRITING AND COMPUTING MACHINE Application April 9, 1937,Serial No. 135,892

36 Claims.

This invention relates to typewriter-accounting machines and tomechanism therein for printing a date or other set data that is to berepeated for individual lines of typing on work-sheets.

The invention aims to provide improved mechanism whereby said date ordata is printed automatically by the machine and under control of meanssuch as the typewriter carriage in order to reduce the operators labor,avoid errors, and gain other advantages.

A further object of the invention is to have each automatic printing ofthe date include the month, and the day; and the year may also beincluded.

A further object of the invention is to provide for adjusting saidmechanism relatively to the travel of the letter feeding or columntabulating carriage so that any column of the worksheet may be allocatedfor the automatic entry of said date or data, consonantly with differentforms of work-sheets.

For printing said date or data there may be employed a singletype-carrier having types that are changeable. For instance, in atype-bar for printing the date, DEC. 26 36, a type-insert comprisingthree separate type-slugs, one for' the month, one for the day and onefor the year, is used and is changeable for different dates. Suchcomplement or group of date types is preferably condensed laterally toprint within a column narrower than if the types were arranged accordingto the standard letter spacing of the machine. They may be arranged alsoaccording to said standard letter spacing. In any case, their aggregateimprint on the work-sheet covers several letter-spaces.

A further object of the invention is to provide means whereby,incidentally to the date-printing operation of said type-carrier, thetypewriter carriage is caused to advance automatically according to saidseveral date-covering letter-spaces. For example, if the allocated Datecolumn is between two other work-sheet columns separated by a number ofletter-spaces sufficient to include the date-imprint and columndemarcating spaces, said means will work automatically to cause thecarriage to traverse said number of letter-spaces incidentally to theautomatic operation of said single type-carrier; and said means includeprovision for adjustment so as to be operable for any place in thework-sheet line, that is, be operable for any Date column that may beallocated within the Width of the Work-sheet.

carrier and for facilitating the removal or replacement of saidtype-insert. I

The invention is herein shown applied to a typewriter, such as theUnderwood, employing key-controlled type-bars, operable one at a time, aplaten, and a letter feeding and tabulating carriage. The singledate-printing type-bar is disposed at one end of the usual array oftype-bars and like the latter is mounted for movement toward a commonprinting point. A power-operable snatch-roll is incorporated in thetypewriter and is used as the power-medium or motor. Means actuable toconnect the date type-bar to said snatch-roll for a printing stroke areunder control of the typewriter-carriage, the latter being provided witha controller preferably in the form of a tappet to engage and actuate ajack or camplate to operate said connecting means, and said controlleror tappet may be adjustable along said carriage so as to be eflective atsuch place in the carriage travel as corresponds with the predetermineddate-printing column of the worksheet.

There is also provided means operable to connect carriage advancingmechanism to said snatch-roll for advancing the carriage the aforesaidnumber of letter-spaces incidentally to the power-operation of thedate-printing type-bar; the carriage having a controller ortappet-device for engaging and actuating another jack to operate thelast-mentioned connecting means; and said tappet-device is adjustablealong the carriage in correlation with the adjustment of the tappet thatserves to connect the date type-bar to the snatch-roll. The automaticadvance of the carriage is efiected preferably by working the letterfeedescapement repeatedly to effect the requisite extent of carriageadvance; and since the ink ribbon feed may be operated concomitantlywith said escapement there is gained the advantage that the ribbon isfed an extent consonant with the aggregate width of the date-types,thereby conducing to even wear of the ribbon.

The aforesaid controllers that serve on the carriage to connect the datetype-bar and escapement to the snatch-roll may be incorporated in acontroller or tappet-unit settable along the carriage according towhichever work-sheet column is to be allocated for date printing.

The invention also provides means whereby during the return of thecarriage, usually effected by means of power operable mechanism, saidtappet-unit does not work to operate the dateprinting type or theescapement.

The invention also includes means conditionable at will, whereby saidtappet-unit does not work the date printing type or the escapementduring the advance of the carriage through a date printing zone, saidmeans being conditionable, for example, preparatory to doing ordinarytyping with the type-writer mechanism and being restorable at will.

Means are also provided whereby, at operation of a tabulating mechanismto skip the dateprinting zone, said tappet-unit does not work to operatethe date-printing type or the escapement. Thus, at operation of thetabulating mechanism to skip the Date column, the date-printing devicesare silenced so as to be inoperative while the carriage advances throughsaid Date column zone to skip the latter.

The date-printing tappet-unit may form part of a set including otherunits, such set being devised for a given form of work-sheet, and saidother units operating during the typing of a line to control computingmechanism that is usually included in machines provided with thedate-printing mechanism.

Certain features of the invention pertain to constructing and arrangingcarriage controlled parts of the date-printing mechanism in structuresimplifying correlation with certain carriage controlled parts of thecomputing mechanism.

The carriage-controlled letter-spacing devices that are operative toautomatically space the carriage a predetermined number of letter-spacesmay be adapted for use aside from the date or data-printing operations.For example, such devices may be used to automatically advance thecarriage from one column to another column that is separated from thefirst column by a multiplicity of letter-spaces.

The date-imprint on the work-sheet may extend laterally to either sideof the conventional common printing point of the regular typewritertypes. In such case a primary part of the total number of letter-spacesto be traversed by the carriageincidentally to the date printing may becaused to be traversed after printing the last character in a columnpreceding the Date column and before and preparatory to the operation ofthe date type-bar so that the date-imprint does not overlap saidpreceding column. Then, after the date type-bar has been operated, theremaining or secondary part of said number of letter-spaces may betraversed by the carriage to bring the date-imprint clear of saidprinting point preparatory to operating one of said regular typebars foran entry in a column succeeding the Date column. Primary andnsecondarycontrol or tappet means on the carriage may operate to cause the latterto work or control the escapement to cause the carriage to automaticallytraverse each of said parts of said number of let tor-spaces. Thetraverse by the carriage of the primary part of said number ofletter-spaces may also be effected by manually operating the tabulatingmechanism, and in such case provision of the primaryesoapement-controlling tappet for the Date column may be dispensed with.

Broadly considered, the invention aims to make provision, in aconventional typewriter such as the Underwood, automatically causing tobe printed, at a variably predeterminable place in the typing line, adate that is particularized and therefore covers a plurality ofletter-spaces, and to make provision whereby the carriage advancesautomatically consonantly with said plurality of letter-spaces.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a cross-sectional side elevation of the machine showing thedisposition of the mechanism for automatic date or data printing.

Figure 2 is a view of a ribbon vibrator adapted to cooperate with thewide date type.

Figure 3 is a partly sectioned perspective of the date-printing devices.

Figure 4 is a side elevation showing the means and manner of operationthereof whereby the carriage connects the escapement rocker to thesnatch roll for an ensuing carriage-advancing operation.

Figure 5 is a fragmentary side elevation showing the device and mannerof operation thereof for causing repeated connection to the snatchrollof an actuator or draw-link for the escapement rocker.

Figure 6 is a side elevation of the date typebar train and the means andmanner of operation thereof for actuating said train by means of thesnatch-roll and under control of the carriage.

Figure 7 is a front elevation showing the Date column tappet-unit andthe mechanism cooperative therewith for connecting the escapement rockerand the date type-bar to the snatch-rolh the view also showing some ofthe other tappetunits included in a set of units devised for a givenwork sheet form.

Figures 8 and 9 are detailed cross-section views of tappet-units.

Figure 10 is a front elevation, similar to Figure '7, showing the Datecolumn tappet unit as havin engaged and actuated the means whereby thedate type-bar is connected to the snatch-roll, an illustrative worksheet form being shown relatively to said date unit and other columntappetunits.

Figure 11 is a front elevation showing the device and manner ofoperation whereby, during the carriage return run, the Date columntappetunit idly overrides the means that connect the date printingtype-bar to the snatch-roll.

Figure 12 is a side elevation showing the mecha-" nism and manner ofoperation thereof for preventing, during a power-driven carriage returnrun, the Date column tappet-unit from working the means that connect theescapement rocker to the snatch-roll.

Figure 13 is a front elevation showing the Date column tappet-unitequipped with a tabulating stop and the latter engaging a projectedcounter-stop for positioning the carriage to directly register said Datecolumn tappet-unit with the means that connect the date type-bar to thesnatch-roll.

Figure 14 is a front elevation showing individually a form of tappet,used with the Figure 13 unit, for connecting the escapement rocker tothe snatch-roll after operation of the date-printing type.

Figures 15 and 16 are side elevations of devices for disabling andrestoring. the date-printing mechanism at will; Figure 16 showing saiddevices as conditioned by means of a key to prevent the carriage and itsDate" column tappet-unit from working the date-printing mechanism aswhen it is desired, for example, to use the regular typing means to typeother data than the date in the zone of carriage travel for which saiddate tappet-unit is set; and Figure 15 shows the operation of means forrestoring said devices.

Figure 17 is a front elevation showing the Date column tappet-unitequipped with a tabulating stop and engaging a counter-stop forpositioning the carriage to register said tappet-unit with the meansthat connect the escapement rocker to the snatch-roll for a carriageadvance preceding the operation of the date type-bar.

Figure 18 is a front elevation showing disposition, for printing thedate at the beginning of a line, of the .Date column tappet-unit foroperating the date-printing mechanism as the carriage takes the usualdrop-back step or the like at the'end of the carriage return movement.

Figure 19 is a perspective of components of the Date column tappet-unitseparated from one another to illustrate details.

Figure 20 is a partly sectioned front elevation showing a modified formof the tappet that serves to connect the escapement rocket to thesnatchroll.

,, Figure 21 is a perspective of a tappet-unit componentv that combinescertain parts shown constructed separately in Figure 19.

Figure 22 is a cross-section of the tappet-unit having .the modifiedcomponent of Figure 21, and lffurther showing in detail the tappet thatcontrols the date-printing type-bar.

Figures 23 and 24 are enlarged-scale partly sectioned side views of thedate-printing typebar showing details of the construction for detachablyconnecting a type-carrying upper mem her to a-lower member of thetype-bar, and also showing the means for removably retaining the typesin said upper member.

Figure 25 is a front elevation showing the date-printing type-bar asmounted in the typebar segment and swung to printing position.

Figure 26 is a cross-section, taken on the trace 28-26 of Figure 24, ofa type-insert retaining socket or box of the date-printing type-bar, andshows details of the means for removably retaining the type in saidsocket.

Figure 27 is a cross-section of the date-printing type-bar on the trace21-21 of Figure 23.

Figure 28 shows, in front elevation, a modified datetype-bar-controlling tappet and a modified cam-spur co-operativetherewith.

Figure 29 is a front view diagram showing th parts and their operationwhereby, while tabulating the carriage through the date zone forskipping the latter, the date-printing devices are ineffective.

Figure 30 is afront viewdiagram showing the co-operation of tabulatingstops for positioning the carriage for a column preceding the Datecolumn.

The invention is shown applied to a combined typewriting and computingmachine of the Underwood-Hanson class exemplified in my Patent 1,927,951issued September 26,, 1933.

In such machine a typewriter A is superposed on a computing base B.

Type-bars 35, Figure 1. are arrayed arcuately in slots 31 of a segment38, Figure 25, supported by typewriter frame 39, and typing levers 48,operable selectively under control of alphabet and numeral type-keys 4|,42, are each connected to a companion type-bar 35 by a bell crank 44fulcrumed at 45, the type-bars 36 having an arcuate fulcrum rod 45 inthe segment 38, said levers 48 being fulcrumed at 41 and spacedlaterally in a slotted cross-bar 49 of the framework.

The type-bars 35 swing to a platen 48 to print at a common printingpoint represented, Figure 10, by the usual central type guide 50. A stopanvil 52 on the segment 38 co-operates, in known manner, with thetype-bar 36 and spring 53 for typing lever 40, Figure 1, co-operates torestore the type action.

A universal bar 54 is moved rearwardly, by type-bar heel 55, at the endportion of the printing stroke to work an escapement rocker 51 andescapement dogs 58, 59 thereon relatively to an escapement wheel 60.Springs 6|, 52 restore said universal bar 54 and escapement rocker 51 atthe type-bar recoil. A carriage 64 mounts the platen 48 and runs alongguide-rails 55, 66 on the frame 39. The usual spring motor 61 urges saidcarriage in letter-feed steps controlled by said escapement dogs.58, 59and escapement wheel 50, the latter having a pinion58 engaging a rack 69on said carriage.

Depression of a tabulating key 10, mounted on a tabulating key-lever 12fulcrumed at 13, releases the carriage 54 for an advance which ischecked when acounter-stop 1|, at the back of the typewriter, projectedupwardly by said keylever 12 intercepts a column stop, hereinafterdescribed, on the carriage 64. Connections, not shown, enabling saidtabulating key to release the carriage 54, may be of the kind seen inPatent 1,858,447 to W. F. Helmond issued May 17, 1932.

The computing base B may have a plurality of laterally spaced registersor sets of computing wheels 15, Figure 1, each register having its ownset of reciprocatory indexable denominational wheel drivingregister-bars 16. Such plurality of registers and the lateral spacingthereof is exemplified in my aforesaid Patent 1,927,951. For indexing.each register-bar is slightly advanceable individually, counter to theusual restoring spring 11, to bring digit pins 18 thereon from theFigure 1 positions to positions under transverse digital pin-settingbars 19. By means of rod 80 pendent therefrom each numeral keycontrolled lever 48 when depressed rocks a companion shaft 81 to depressthe companion pinsetting bar 19 and thereby, in whichever registerbar orbars 15 have been slightly advanced, depress the corresponding digit pinor pins 18 into the path of a reciprocatory general operator cross-bar82. Said cross-bar 82 is cycled after the digit pin-setting orindexing'operations have been effected for a selected set or sets ofregister-- spective rows of digit pins 18 under the pinsetting bars 19there may be employed mechanism disclosed in my copending' applicationsSerial No. 472,610 filed August 2, 1930, Serial No. 604,691 filed April12, 1932' and Serial No. 72,348

'iiled April 2, 1936, and such mechanism is therefore briefly describedas follows: For each register of the machine there is an individualcamplate 85, Figure 1, the several cam-plates being slidably supportedfor individual edgewise vertical movement, in a housing 86 on themachine framework. Said cam-plates 85 form a group traversiblebycam-plate selecting teeth 81 on the carriage. For each computingcolumnof a work sheet, such as 98, Figure 10, for example,

there is provided on the carriage 64 a column unit C, Figures 3, 7 and10,, having one or more of said teeth 81 to engage and depress theappropriate one or more cam-plates 85 when the carriage arrives at thezone for said computing column. Each computing-column unit C alsoincludes a denomination selecting tooth which at the travel of thecarriage through the computing zone depresses denominational Jacks 02,Figures 1 and 3, seriatim for slightly advancing the register-bars 10 indenominational order to bring their digit pins 10 under the pin-settingbars 19. One group of series of jacks 02 serves for all the register-barsets and therefore rami fies to the latter by means of denominationalcross-blades 04, Figure 1, rockable individually upon their lower edges.Said jacks depress denominational rods 05, Figure 1, so that the latter,by means of bell cranks 06 fulcrumed on a rod 91 move denominationalmaster racks 00 forwardly to rock said cross blades 94, each rack 90meshing individually as at 90 with the companion cross-blade 04. Behindeach set of register-bars 16 is a set of denominational sub-racks I00each having a coupler IOI pivoted thereto at I02 and normally depressed,in the full line position, Figure 1, so that the sub-rack I00 and itsregisterbar 10 are normally operatively disconnected. Selection of a setof register-bars is effected by raising its set of couplers IOI to theFigure 1 dotted-line position by depressing the appropriate cam-plate05. Intermediate connections, Figure 1, between each cam-plate 85 andits set of coupiers I 0| include a partly shown thrust-rod I04operativeiy connected to said cam-plate 00, a lever I05 pivoted at I00and cooperating with linkage I01 to link said thrust-rod I04 to arockshaft I08, and a transverse coupler-shifting plate I00 slidablysupported by the frame-work for up and down movements by said rock-shaftI00. The appropriate cam-plate 05 is kept depressed by its tooth 01throughout the traverse of the computing zone by the carriage, and thecorresponding set of couplers MI is correspondingly kept elevated. Whenthe tooth 81 leaves said cam-plate 85 at the end of the zone thecam-plate 00, its set of couplers IM and said intermediate connectionsbecome restored by suitable springs not shown.

While the cam-plate 05 is kept depressed as the carriage traverses thecomputing zone and its set of couplers IOI kept elevated thecorresponding set of register-bars is kept connected to the cross-blades04 ramifying from the denominational jacks 02 so that the traverse ofthe latter by the tooth 9I slightly advances said register-bars seriatimfor indexing.

The novel mechanism for automatically printing a date or other set datain a line of typing will now be described.

A type-bar III, Figures 1, 3, 6 and 24, for such date or data ispreferably mounted at one end of the array of type-bars "and has afulcrum notch II2, Figure 24, for articulation with the fulcrum rod 46in the type-bar segment 00. Said type-bar III may have a plurality orgroup of type slugs or blocks H3 for printing, at one stroke orsimultaneously, the month, day, and year of the date DEC 26 '36, Figure10, for example. A slot H4, in the segment 30, for said type-bar II I isspaced sumciently, as indicated at H0, Figure 28, from the slot 31 forthe last type-bar 00 so that the type of the latter and the wide groupof date-type III do not clash. It will be understood that each slug hasthe appropriate type on its printing face. Thus, for said date the lefthand type or slug III, Figure 24, has types forhaving a restoring spring00, Figure 1, is connected to said date type-bar III by a bell crank H8,Figures 1, 3 and 6, fulcrumed at 40. A forwardly reaching arm II! ofsaid bell crank I I0 has a pin-and-slot connection I to said lever I I1.Said bell crank IIO also has an upwardly extending arm I2I having alateral reach I22, Figure 3, provided with a pin I22 for engaging acam-slot I24 in said type-bar III. A heel 00 of said date type-bar IIIengages the universal bar 04 as in Figure 6 to effect a letter-spacestep of the platen carriage 04 in the same way as does the heel 00 ofany of the type-bar 30. Said universal bar 04 also has connection,diagrammatically represented at I 20, figure 4, to a vibrator I20 for anink-ribbon I20 and said connection may be of the kind seen in Patent926,050 to F. A. Cook, issued June 22, 1909. Prongs 126 of said ribbonvibrator may be spaced sumciently apart, Figure 2, to permit the widedate-printing type III, to strike therebetween.

The plural date-types III are disposed preferably so that the center oftheir aggregate imprint substantially coincides, Figure 10, with thecommon printing point at the center type-guide 50. The date-imprint thusextends to the left of said common printing point. It is necessarytherefore, following the usual single letter-space carriage-step thatoccurs with the typing of the last figure, in say, the Invoice" columnof the work-sheet 00, Figure 10, to advance the carriage farther beforeprinting the date so that the dateimprint will clear the Invoice column.Since the date-imprint also extends to the right of the common printingpoint, it is also necessary following operation of the date-type-bar IIIto advance the carriage sufilciently to bring the dateimprint on thework sheet clear of the common printing point preparatory to typing thefirst character, in say, the "Description column of the work-sheet 00.

Operation of the date-type-bar III and advancement of the carriage 04 anextent consonant with the date-imprint width are effected automaticallyunder the control of said carriage. Therefore, a date-column-unit D islocated on the carriage so that at the carriage travel relative to theDate" column for the work-sheet 00, said date-column-unit D may engage adate-type-barcontrolling Jack or cam-plate I21 and a carriageadvance orescapement controlling jack I20. Said cam-plate I21 is grouped with theregister-selecting cam-plates 00, as in Figure 1; and said escapementcontrolling Jack I20 ls'grouped with thedenominational-register-bar-controlling jacks 02, and is placedpreferably between the two jacks 02 for the tens of cents and units ofdollars denominations. 2

As the carriage takes the usual letter-space step at the typing of .thelast figure in the Invoice column of the work-sheet 00, a tappet I30 onthe date-column-unit D encounters and depresses theescapement-controlling jack I20 as in Figure '1, to thereby, by means ofan intermediary train, lift a draw-link III, operatively connected tothe escapement rocker 01, into engagement with a power-operablesnatch-roll I02 supported and journaled in the framework. Saidintermediary train includes, Figure 3, a cross bail I00 pivoted as atI34 to the housing 86 and connecting said Jack I28 to a dummy jack I35,a thrustrod I36, 2. bell-crank I31, a rock-shaft I38, a link I39 and atrain-terminating bell crank lever I40 having a lateral tab I42 forengaging and lifting the escapement-rocker actuating draw-link I3I intoengagement with said snatch-roll I32. Rearward movement imparted to thelifted draw-link I3I, by the rotating snatch-roll I32 rocks a lever I43,connected to said draw-link I3I at I44, about a fulcrum-rod I45,supported by the framework and said lever I43 working against a camarmI41 on a rockshaft I46 rocks the latter to work the Underwood universalbar structure, the latter including a rockable frame I48 pivotallyconnected at I49 to a plate I50 extending rearward from the universalbar 54; said frame I48, also having an arm I52 for working theink-ribbon feed as will be explained later. By means of an arm I53engaging said arm I52, the rock-shaft I46, when rotatedcounter-clockwise of Figures 3 and 4, by means of the snatch-roll I32and described connections, rocks said frame I48 clockwise, and therebymoves the universal bar plate I50 rearwardly to rock theescapement-rocker 51 clockwise, said plate I50 engaging saidescapement-rocker 51 as at I53, Figure 3.

It may be noted that as the draw-link I3I is lifted, a toothed elementI54 thereof meshes with the snatch-roll I32, as in Figure 4, andthereupon is at first turned idly by the latter, about a pivot I55, to astop position relative to the draw-link I3I, like in Figure 6, whichrepresents a similar element I54 for another draw-link that will bedescribed later. The snatch-roll I32, having thus first turned saidelement I54, then moves the draw-link I3I rearwardly, and then a cam-endof the latter, like I56 for said other draw-link in Figure 6, encountersa fixed cam-edge I51, and said draw-link I3I is thereby caused to becomedisconnected from the rotating snatch-roll I32, to limit the clockwiserocking of the escapementrocker 51 to a position like in Figure 6. Asthe draw-link I3I becomes thus disconnected from the snatch-roll I32 itis urged forwardly by a spring I58 to permit the universal bar plate I50to move forwardly and the escapement-rocker 51 to rock counterclockwiseby means of their respective springs 6I, 62. At the describedreciprocatory rocking of the escapement-rocker 51, effectedautomatically under control of the carriage and by means of thesnatch-roll I32, the escapement wheel 60 and carriage spring 61cooperate to advance the carriage a letter-space step beyond the stepthat occurred with the printing of the last figure of the Invoice columnof the work-sheet 90.

The carriage-advance-controlling tappet I30 of the unit D has a dwellI30 which keeps the jack I28 depressed, and thereby keeps thedraw-linklifting tab I42 elevated as in Figure 5, at the end of saidfurther carriage-step. It results that a cam-edge I59 of the releasedand forwardlyspring-pressed draw-link I3I encounters said still liftedtab I42, and that said draw-link I3I is thereby deflected upwardly againto re-engage the snatch-roll I32, like in Figure 4, for repeating thedescribed reciprocation of the escapementrocker 51 for effecting stillanother letter-feed step of the carriage 64. Said dwell I30 of thecarriage-advance-controlling tappet I30 is of such extent as toautomatically efiect enough letterfeed-step repetitions to bring theDate" column of the work-sheet 90 into appropriate register with theimprint-field of the date type-bar III; the letter-step repetitionsending with the step wherein a dwell-terminating edge I 30 of saidtappet I30 permits the depressed jack I28 to rise again, and the lifteddraw-link-controlling tab I42 to drop again, as a spring I60, acting onthe link I39 of the intermediary train that connects said jack I28 andthe tab-bearing bell-crank lever I40, restores said train and jack I28to normal positions determined by abutment of a stop-arm I62, on therock-shaft I38, with a cross-bar I63 of the framework. Said rock-shaftI38 is journaled in brackets I64 on said cross-bar, Figure 7, and has anarm I65, engaged by the bell-crank I31 of said train, and an arm I66 towhich the link I39 is connected. The jacks I28 and I35 are articulatedto their connecting cross-bail I33 by pin-andslot connections I69,Figure 4, and are guided, like the denominational jacks 92, for endwisevertical movements in slotted cross-members I61, I68, Figures 1 and 3,in the housing 86. A slotted cross-member I10 of the framework guidesthe thrust rod I36 of the escapement controlling train and the thrustrods 95 of the denominational in dexing trains near their upper ends,said upper ends being abutted by the lower ends of their respectivejacks 92, I35. The fulcrum rod 91 for the denominational bell-cranks 96also fulcrums the bell-crank I31 of said escapement controlling train.

A draw-link I13 may be moved rearwardly by the snatch-roll I32 andthereby rock a lever I14 counterclockwise, Figures 3 and 6; on thefulcrum rod I45 to depress the date type lever II1, connected to saidlever I14 by a link I15.

In the carriage step at which the tappet edge I30 releases the jack I28a date type bar controlling tappet I16, Figures 1, 3, '1, 8, 10, 19, 22,provided on the Date column unit D, comes into play and depresses thecam-plate I21 by engaging a cam spur I11 on the latter as in Figure 10.

Said cam-plate I21 when thus depressed lifts the date-type-bar draw-linkI13 into engagement with the rotating snatch-roll I32, by depressing asub-plate I19 to rock a shaft I80 to rock a lever I8I said sub-plate I19having a stud I82 engaging an arm I83 of said rock-shaft I80, the latterbeing journaled in the housing 86, Figures 1, 3, 7, 10, and having anarm I84 connected, as at I85, to an arm I86 of said lever I8I. Saidlever I8I also has an arm I81 provided with a drawlink-lifting lateraltab I88 and is fulcrumed on a rod I89 supported by brackets I90, Figure1, on the cross-bar 49. Said lever-arms I84 and I81 are shown relativelyofiset laterally, Figure 3, and connected by a yoke I9I. Collars I92retain the lever I8I laterally on the fulcrum rod I89. Upper and lowercross-bars I93, I94 guide the sub-plate I19 vertically in the housing86.

The date-type-bar draw link I13, engaged withthe rotating snatch-rollI32 through depression of the cam-plate I21 by the tappet I16, as inFigure 10, is drawn rearwardly and thereby depresses the date-type-leverII1 to rock the companion bell-crank H8 and swing the date-typebar I I Ito the platen for printing the date in the Date column of the work-sheet90. The fixed cam-edge I51 engages the cam-end I56 of the rearwardlymoving draw-link I13 to disconnect the latter from the snatch-roll I32to permit the date-type-bar III, after its date-type II3 strike, torecoil from the platen.

The escapement rocker 51 and the universal bar structure 54, I48, I50,are reciprocated by means of the date-type-bar heel 55 and the Springs6|, 62, and thus co-operate with the escapement wheel andcarriage-spring 61 to advance the carriage a single letter-space stepincidentally to the date-printing operation of the type-bar Ill. By thislatter letter-space step, a secondary escapement controlling tappet I96on the date-column unit D on the carriage comes into play and depressesthe jack I28 again to connect the escapement-rocker actuating drawlinkI3I to the snatch-roll I32 for a further letter-space step of thecarriage. Said tappet I95 has a dwell I95 to keep the jack I28 depressedfor further letter-space-step repetitions to bring the first plate inthe Description column of the work-sheet 90 to the printing point; itbeing noted that said dwell I96 effects said letterspace-steprepetitions in the same manner as did the dwell I30 on tappet I30preparatory to the date-type-bar operation. A dwell terminating edge I96permits the jack I28 to rise at the step which brings the first place inthe Description column to the printing point and thereby halts thecarriage at said place.

The date type-bar-controlling tappet I18 need not release the cam-plateI21 in the letter step following operation of the date type-bar II I andis therefore shown provided with dwell I15 Figure 8, to keep thecam-plate I21 depressed and the date draw-link-lifting tappet I88elevated, Figure 6, while the carriage is being advanced from thedate-printing place to said first place in the Description column. Saidlifted tab I88 thus opposes full-return of the date-type draw-link I13at release of the latter from the snatch-roll I32, it being noted thatat said release a forwardly and downwardly pulling restoring spring I91swings said draw-link I13 downwardly, about its pivotal connection I98to the lever I14, to clear the snatch-roll I32. Thus said elevated tabI88 blocks an edge I99, Figure 6, of said downwardly swung draw-link I13to oppose, for the time being, full return of the latter. It should benoted that the draw-link I13 when released from the snatch-roll hasenough forward movement, before its arrest by the elevated tap pet I88to permit the date-type-bar heel 55 to recede from the universal bar 54to permit the latter and the escapement rocker 51 to effect completionof the letter-space step that is to occur with the date-type-baroperation. A modification of the tappet I16 designed to 'permitimmediate release of the cam-plate I21 to occur in the letter-space stepfollowing the date typebar operation will be described later.

As or before the carriage takes the final step which brings it to thefirst character place in the Description column, a dwell-terminatingedge H6 of the tappet I16 permits the cam-plate I21 urged by a spring200 on the sub-plate I19 to rise with the latter to normal positionsdetermined by a cam-plate engaging stop 20I, Figures 1, 10, 11. Thispermits the lever I8I, urged by a spring 202, and the rock-shaft I80, toreturn to normal positions wherein arm I 81 of said lever I8I abuts astop-bar 203. Said stop-bar 203 also limits the downward swing of thedraw-links I3I, '59 by their springs I58, I91. At the return of thelever iiiI to its normal position, its tab I88 releases the date-typedraw-link I13 and the latter, urged by its spring I91, returns to normalposition, Figure 3, determined by abutment of a spur 204 on the leverI14 with a stop 205 on the frame. Similarly, Figure 3, a stop 208 isengaged by the lever I43, connected to the escapement draw-link I3I, todetermine the normal position of the latter.

When the universal-bar structure 54, I48 is operated repeatedlyincidentally to operation of the date-type-bar III as above described,it also operates to feed the ribbon I29, Figure 4, repeatedly to anaggregate extent commensurate with the wide date-imprint. Theribbon-feed mechanism may be of the kind seen in Patent 931,303 toHelmond, dated August 17, 1909, and is accordingly diagrammaticallyrepresented at Figure 4 by a pawl-device 208 connected as at 209 to thearm I52 of the universal-bar-structure frame I 48, a ratchet 2I0operable by said pawldevice208, and ribbon-spools 2I I operativelyconnected to said ratchet as indicated by the dotted line 2I2.

It will be evident from the foregoing that consequent to typing the lastcharacter in the Invoice column there will automatically occur, undercontrol of the date-column-unit D, a dateprinting operation of thedate-type-bar III, and plural letter-space advance of the carriage,before and after the date-type-bar operation, to registerthe-date-imprint with the Date column and finally advance the carriageto the first character place in the Description column.

The carriage may also be tabulated to bring the date-column-unit D intoplay as, for example. when it is desired to skip the Invoice" column.One of the denominational-tabulating stops H, for example, the stop Hfor the tens of cents denomination, is projected by means of its key andarrests the resulting carriage advance by engaging a column stop 2disposed on the datecolumn unit D, as in Figure 13, so that uponretraction of said stop H the carriage settles in the position whereinthe date-type-bar-controlling tappet I of said unit D just depresses thedatetype-bar-controlling cam-plate I 21 as in Figure 10. It results asthe carriage thus settles in said position that operation of thedate-type-bar III follows immediately, instead of following thehereinbefore described carriage-stepping operation effected undercontrol of the tappet I30, and said tappet I30 may therefore be omittedfrom the unit D in that the latter has only the secondarycarriage-spacing tappet I96 as represented in Figures 13 and 14. In theletter-space step of the carriage occurring at said immediate date typebar operation said tappet I96 for spacing the carriage farther ashereinbefore described comes into play.

It is feasible to retain provision of the tappet I30 on the date-columnunit D and tabulate the carriage so that it settles in the position,Figure 7, wherein said tappet I30 has just depressed thecarriage-escapement-operating jack I28. such purpose a tabulatingcolumn-stop 2I5, for engaging the tens of cents denomination stop 1| isprovided on the unit D but is offset laterally from the body of saidunit D by spacers 2I5, Figures 17 and 19. Figure 17 shows the positionof the work-sheet Date column relative to a line 2I3, representing thecommon printing point, when said column-stop 2 I5 abuts saiddenominational stop 1I; it being understood that upon release of thelatter, the carriage and its tappet I30 advances slightly to the Figure7 position to depress the carriage-spacing jack I 28.

One or more computing-column units C, the date-column unit D andpossibly certain other units T and TT used for tabulating only ashereinafter described, constitute a set for a given work-sheet form,such units being placeable differentially along the carriage fordiiferent forms and different locations of date-columns.

Figure represents a unit M usable aside from For the date-printingoperations in that it is adapted to control only the describedcarriage-spacing mechanism when it is desired to use the latter forautomatically effecting only column or letterspace skipping, said unit Mhaving a tappet 2" provided with a dwell 2I1 to keep theescapement-operation-controlling jack I28 depressed for a predeterminednumber of column-skipping letter-space steps.

The units C and D may each have the same kind of body, namely, anelongate block or rod 220, Figure 19, having a number of notches 22Iaccording to the cam-plate capacity of the machine. In thecomputing-column unit C one or more of the register-selecting teeth 81are inserted in the appropriate notches 22 I; and in the date-columnunit D a plate 223 forming the date-type-bar-controlling tappet I16 isinserted in its appropriate notch 22I for co-acting with the cam-plateI21. Plates 224, removably attached, as will presently be explained, tothe lateral sides of the body block 220, have key-slots 225 to interlockwith lateral key-tongues 226 provided on the teeth 81 and the plate 223to retain these on the block. Each block 220 is formed with teeth 221,Figure 19, to interlock with a front unit-supporing rack 228, Figures 1and 3, supported on brackets 229 extending rearwardly from the carriageand a spring-clip 230 attached as by a screw 23I to the block 220, has adetent 235 seatable in a longitudinal groove 232 on said front rack 228to removably hold the unit against endwise displacement. A plate 233forming the tabulating-eolumn-stop 2I5 also forms a tooth 234 tointerlock with said front rack 228 for lateral support of said stop 2I5, said plate 233 being attached to the block 220, and spaced laterallytherefrom by the spacers 2I6. A roll 236 at the rear end of each unitengages a fixed track 231, Figure 1, on the housing 86, to steady theunit vertically when it depresses a cam-plate or jack, said track beinglimited in length so as to engage the unit substantially only while thelatter is active. Each unit also has laterally spaced teeth 238 andlaterally spaced clips 239 above said teeth 238 to interlock with andembrace a rear unit-supporting rack 240 supported in upturned ears 24Iof the carriage-supported brackets 229. Said rear rack 240 co-operateswith said teeth 238 and clips 239 to support the unit and its tappetsagainst turning or becoming cocked about any longitudinal axis thereofand said teeth 238 and rear rack 240 co-operate with the front rack 228to locate and laterally support the unit C or D. Each tooth 238 and .itscompanion clip 239 may be formed on an individual plate 243 and screws244 attach said plate 243 and adjacent tappetretaining key-plate 224 tothe block 220,. One of said screws 244 may hold the key-plate 224independently of the outer plate 243 as represented by screw-headclearance 246 in the latter, Figure 19.

Each tooth 238 and companion clip 239 may also be formed integrally withthe key-plate 224, as represented in Figures 21, 22. A unit-settingscale 246 is supported by the brackets 229 to register with anindex-mark 248 on each unit C or D.

In the computing-column unit C, the denomination-selecting tooth 91, forengaging the denominational jacks 92, has a fixed location lengthwise ofthe block 220, the latter having a transverse recess 249, Figure 19, anda hole 250, Figure 7, to receive respectively a base 25I and a shank 252of an element 253, shown separately in dot-and-dash, Figure 7, formingsaid denomination-selecting tooth 9|, said shank 252 having a force fitin said hole 250.

In the date-column unit D said transverse recess 249 is occupied by anelement 254, Figure 19, instead of by said element 253, said elementbeing of angular cross-section forming a base 255 and dependingtherefrom a portion forming the tappets I30, I96, as in Figure 19, ortappet I96 alone, as in Figure 14. The tappet 2I1 represented in Figure20 is similarly constructed. A retaining screw 256 is countersunk in thehole 250 of the block 220 and threaded in to the base 255 on said tappetelement 254.

For enabling the escapement-controlling tappets such as I30, I96 toclear the denominational jacks 92 and operate only theescapement-controlling jack I28, the tops of said denominational jacks92 may be jogged as at 251, to remove the portion that is in the path ofsaid tappets I30, I96, while, in said jack I28, said portion is notremoved, as shown in Figure 3. Jacks 258, Figure 3, are engageable onlyby the denominational tooth 9I of a computing unit C for effectingpunctuation-spacing of the carriage, but are, like the jack I28,connected to the bail I33 for Working the dummy jack I35 that leads tothe escapement-actuator draw-link I3I; said punctuation jacks 258 alsobeing jogged as at 251. In a computing zone, the denomination-selectingtooth 9| also works the jack I28 for punctuationspacing, it beingremembered that said jack I28 is between the two jacks 92 for theunits-of-dollars and tens-of-cents denominations. In other words, in acomputing zone, said jack I28 only co-operates with thedenomination-selecting tooth 9I for punctuation-spacing, while, in adate-printing zone, said jack I28 co-operates only with the tappets I30,I96, to space the carriage repeatedly incidentally to operation of thedate type-bar III After the carriage has been advanced to bring the widedate imprint on the work-sheet clear of the single-type printing point,as, for example, by advancing the carriage as above described, to

bring the first letter-space of the Description" column to saidprinting-point, the typing of the remainder of the line proceeds. Thecarriage is then returned preferably by power, preparatory to typing anew line on the same work-sheet or on another work-sheet.

A carriage-return key 26I, operated as in Figure 12, releases alatch-link 262 from a holding plate 263 for rearward movement by spring264 to the Figure 12 position. This rocks a shaft 265 that, in turn,rocks a shaft 266 to shift a carriage-return pinion 261 rearwardly alonga power-shaft 268 to clutch said pinion to said power-shaft 268 forensuing return of the-carriage, said pinion 261 meshing with acarriagereturn rack 210, and said shaft 268 being driven by a motor, notshown.

As the carriage nears the end of its return run, a dog 212 thereonengages a cam-arm 213, Figures 12, 18, splined to a rock-shaft 214 foradjustment along the latter together with a marginstop 269, hereinafterreferred to. Said dog 212 thus rocks said shaft and thereby, through alinkage 215, moves the carriage-return pinion line-spacing device thatis operated automatically at the carriage-return operation.

For preventing re-operation of theescapement while the date-column unitD passes the datezone during the return of the carriage, there may beused, in conjunction with the present improvements, mechanism disclosedin my aforesaid application Serial No. 72,348. Said mechanism disablesthe denominational jacks 92, the carriage-spacing jack I28, and thepunctuationjacks 258, at engagement of the carriage-return mechanism.

Regarding said jack-disabling mechanism Figures 1, l2 and 15, thefulcrum rod 91 for the jack-train bell-cranks 96, I31, is supported byupright arms 211 of a rock-shaft 218 journaled in the framework. A step280 on a latch-plate 219 on said rock-shaft is normally engaged by alatch-arm 28E to hold said rock-shaft 218 so that the fulcrum rod 91 andits bell-cranks 95, if, said bell-cranks reacting respectively againstthe master denominational racks 98 and the arm support the jaclrs 523,Kit, 259 for effective co-action with the de 'ninatiomselecting toothand tappets When the carriage retur from the re bell-crank so and an e Imounts said la latter clockwise to the lease the latch-plate file. NFC:

i fith the latch plate thus released, the frdcrurmrod 95 is free to moverightward to the Figure position determined by a step of saidlatch-plate 2'58 abutting said turned latch-arm 22 igure 12. In saidFigure 12 position of the iLdcrLmi-rod 91, jacks are free to drop idlyand are manner disabled relatively to the denomi master racks SS; andthe carriage-spacing jacl; punctuation-jacks and dummy ja 3, 39, at thesame time, similarly are disabled relatively to the carriage-spacingdraw-link i3i'.

At restoration of the carriage-return-engaging train 292, 259, 251, bymeans of the carriage-dog 212, at the end of the carriage-rctiun run,the upward movement of the link 28, connected to said train, rocks alever 28S, pivoted to the framework, counterclockwise, Figure 12, bymeans of a pin and slot connection 2:90. Thereby a lateral spur 29$ ofsaid lever 289 overrides a pawl 292 of an arm 293 on a rock-shaft 29 i,and rocks the latter so that a catch 295, thereon, Figure 15, releases aclutch-trip-plate 296 to trip a clutch mechanism, not shown, to connecta shaft 291, journaled in the framework, to the motor, not shown, foreffecting one complete revolution or cycle of said shaft 291. Saidclutch mechanism may be or the kind shown in Patent 1,299,646 to Wood,dated April 8, 919. In said cycle a cam roll 299, mounted on a plate 298of said shaft 291, works against a flange 300 of the latch-plate 219 toturn the latter and its rock-shaft 218 counterclockwise, from the Figure12 position to the Figure 1 normal position, so that the latch-arm 28Iurged by spring 30I, reengages the latch-plate step 280. Said pawl 292permits the lever 289 to turn counterclockwise to the Figure 12position, at engagement of the carriage-return mechanism, withoutrocking the cycle-tripping rock-shaft 294, but at the describeddisengagement of the carriage-return mechanism said pawl 292 and lever289 co-operate to rock said cycle-tripping shaft 294 for an ensuingcycle of the shaft 291.

A spring 302, Figure 12, yieldably holds the cycle-tripping rock-shaft294, its pawl-carrying trip-arm 293, and its catch 295 in normalposition determined by a stop 303 on the framework engaging an arm 304of said rock-shaft 294; said spring 302 tending to return the parts tosaid normal position immediately after the catch 295 has been withdrawn,by means of the lever 289, to trip the clutch-plate 2%, whereby saidcatch 295 may intercept said trip-plate 296 to disengage the clutchmechanism, not shown, at the end of the cycle of the shaft 291.

It may be noted here that rocking of the shaft 218 from the Figure 1position to the Figure 12 position also drops the fulcrum-rod I06 forthe levers I05 of the register-selecting trains and thereby alsodisables the register-selecting camplates 85; said fulcrum-rod I06 beingsupported in a frame 305 depending from arms 306 of said rock-shaft 219.Conversely, restoration oi said rock-shaft .218 during the cycle of theshaft 291 restores said cam-plates 85.

The cannspur 11 on the date type-bar controlling cam-plate l2l in beidly displaced by the tappet I39 or 599, out depressing said can plate,du the run of the ca rage rpose said cam-spur f a pat-1i iiiil slidahlyof said cam-plate i21 stud 302i slidably iitslot 31223. Said pawl. ofsaid ed to rothe oi said 19 so that a shoulder GII .liy rests upon ashoulder 21 to support said pawl in are 10. Said spring 310 connected tothe cam late at (H8 and to another pawl stud tit having playtransversely of a c t through which it the pawl 301 to turn .d .108.When the date 15 encounters said tained age J means of e i ea pawl 301during the o a return run it slides the pawl rightward off thecarn-plate shoulder so that the cam-spur 111 thereon becomes suppressedinto a cam-plate recess 3i8 under the direction of the oblique cam-plateslot 309 as in Figure ll, it being noted that the turning movement ofwhich the pawl 301 is capable about the stud 308 permits the pawl to soslide off said shoulder 3I2 and its cam-spur I11 to so enter said recess3H5 as to prevent said tappet I16 from depressing the cam-plate I21 asin Figure 11. After the tappet I16 has passed said cam-spur I11 in thecarriage-return run, the pawl-spring 3I0 restores th pawl 301 to thenormal position seen in Figures 3 ,10, 13 and 18.

The date-printing mechanism may also be si lenced preparatory to movingthe carriage, in letter-feeding direction, through a zone for which thedate column unit D is set; as for example, when it is desired to use thetypewriting mechanism for ordinary typing operations in said zone. Forthis purpose there are provided means, similar to those described in myaforesaid application No. 12,348, for using the above describedjackdisabling mechanism independently of its connections to thecarriage-return engaging train; and herein there are associated withsaid means devices to render ineffective the date typebar controllingtrain that starts with the camplate I21 and leads to the date type-baroperatin draw-link I18.

In said date-printing silencing means, Figures 1, 3, 15 and 16, akey-bar 318 is manually displaced rearwardly by means of a key 3I9thereon, from the Figure 1 position to the Figure 16 position to rockarms 328, 32I, connected by a yoke 322, to turn the rock-shaft 286 andits latch-arm 28I clockwise to release the latch-plate 219 and therebydisable the jacks 92, I28, I35,

258, in a manner similar to that hereinbefore de scribed. Said arm 328is pivoted to the key-bar 3I8 and supports the latter at 323; and thecompanion arm 32I has a one-way connection 324 to said rock-shaft 286 topermit the latter to be rocked to jack-disabling position independentlyof said arms 328, 32I. At its forward end the key-bar 3I8 is slidablysupported by the framework as at 325. A latch 321, pressed by spring 328and loosely pivoted on the rock-shaft I38, interlocks with a lug 329 ofthe arm 328 as the latter becomes rocked to the Figure 12 position tothereby detent said arms 328, 32I and the latch-arm 28I injack-disabling positions as in v Figure 16.

Incidentally to thus disabling the jacks by means of the key-bar 3I8 theaforesaid date typebar controlling train is also disabled. For thispurpose a switch-plate 33I mounts the stud I82 on the sub-plate I19 andis swingable, about its pivotal connection 332 to said sub-plate, tomove said stud forwardly to clear the arm I83 as in Figure 16 to'disablethe train. Said switch-plate 33I is so swung by the arm 32I thatco-operates with the key-bar 3I8, engaging as at 333, an arm 334 on arock-shaft 335 having an arm 36 engaging the switch-plate 33I as at 331;said rockshaft 335 being journaled in brackets 338 on the framework. Inthe normal positions of the parts the switch-plate 33l pressed by thespring 282 abuts the cross-bar I94 in the housing 86 as at 338 inFigures 1 and 3.

For restoring the date-printing-mechanism, when silenced by means ofthe'key-bar 3I8, to operative condition a cycling key 339 is depressedas in Figure 15 and thereby, by means of a bellcrank 34I pivoted on theframework, displaces a slide 342, mounted for endwise horizontalmovement on the framework as at 343, Figure 1, rearwardly. Said slide342 engages as at 343, the arm 384 of the cycle-trip shaft 294 to rockthe latter to release the clutch plate 296 for a resulting cycle of theshaft 291. At the same time said cycling-key controlled arm 384depresses the latch 321, as in Figure 15, to release said key-bar 3 I8,the arms 328, 32I and the latch-arm 29I for restoration, aided bykey-bar spring 345, to normal positions; the switch-plate 33I urged byits spring 282, thereby also returning to normal position. In said cyclethe cam-roller 299 of the shaft 291 restores the latch-plate 219, itsrock-shaft 218 and the thereby supported fulcrum rod 91 to normalpositions wherein the latch-arm 28I re-engages latch-plate step 288. Theone-way connection 324 of the arm 32I to the rock-shaft 286 carryingsaid latch-arm 28I permits restoration of the arms 328, 32I, key-bar ure16, said pawl being engaged as at 346 by the arm 32I that co-operateswith said key-bar 3I8.

Provision is made to permit the carriage to be tabulated to skip thedate-column zone without printing the date; as when it is desired, forexample, to write the address at the head of the work-sheet 98, Fig. 17.Instead of operating the tens of cents denominational tabulating key 18which would bring the carriage to the position whereat repeatedletter-spacing and date-printing would automatically ensue, as in Figure13 or 17, the units of dollars denominational tabulating key 18 would beoperated, whereby its stop 1I indicated by the dot-and-dash outline,Figure 17, would coact with the column-stop 2I5, seen in Figure 17 onthe unit D, thereby causing the carriage to be tabulated to the positionwhereat the tappet I38 would be two letter-spaces to the right of theescapement-controlling jack I28, it being remembered that the units ofhundreds dollars stop H is separated from the tens of centsdenominational stop 1| by a punctuation space 341, Figure 3. If thecolumn-stop 2I4 is arranged on the unit D as at Figure 13, the units ofdollars tabulating key 18 may also be operated, causing the carriage tobe tabulated to the position whereat the date type-bar controllingtappet I16 would be two letter-spaces to the right of the cam-spur I 11on the date type-bar controlling cam-plate I21. The units of dollarstabulating key is then operated again, causing the carriage to tabulatethrough the date zone to the first letter-space in the descriptioncolumn and without operating the date-printing mechanism. For thesepurposes elevation of any denominational stop 1I (alsoll rocks auniversal bar 348, Figure 1, to depress a cam-link 349 connected as at358 to a universal bar rock-shaft 35I journaled in the framework. The1ower,end of said cam-link 349, slidably guided in a fixture 352 on theframework, has a cam 353 to rock a horizontal lever 354 about a verticalpivot 355, and said lever 354 thereby draws rearwardly a link 356 sothat a lock-tongue 351, Figures 1 and 3, of the latter enters betweentwo of a series of lock-rods 358 and thereby locks said series againstthe admission of any other element; it being noted that fixed end-stops359, 368, Figures 3 and 29, limit the endwise movement of said lock-rods358, the latter being supported on a grooved flange 344, Figure 3, ofthe stop-bar 283. Fixture 352 and the stop-bar 283 slidably I supportthe link 356; and said link 356 and camlink 349 have restoring springs36I, 362 operative to restore the parts when the tabulating key 18 isreleased. The so-far described portion of the locking mechanismassociated with the tabulating keys 18 is substantially as described inmy co-pending application No. 63,627, filed February 12, 1936. In thepresent machine the lock-rods 358 are arranged to prevent, when thetabulating key 18 is operated, admission of either the escapementactuating draw-link I3I or the datetype-bar actuating draw-link I13 andthereby prevent connection of said draw-links to the snatch-roll I32.Said flange 344 has vertical slots, Figure 3, to admit the draw-linksI3I, I 13.

The draw-link train from the escapement controlling jack I28 has aresiliently yieldable connection 3 65 and. similarly, the train from thetype-bar controlling cam-plate I21 has a resiliently yieldableconnection 364. Said connections 364, 365 permit said jack I28 andcam-plate I21 to yield idly as in Figure 29, when engaged by thedate-column unit D, so as not to block movement of the carriage, throughthe date-printing zone when the tabulating key 16 is operated and blocksthe draw-links I3I, I13, by means of the lock-link 351 and lock-rods 358as in Figure 29.

In the yieldable connection 364, Figure 10, the arm I84 is rotatablyloose on the rockshaft I80 and provided with an arm-hub perforating slot348, one end of which and a stop-pin 326 in said rock-shaft I88 arenormally kept in abutment by a spring 363, the latter being connected tosaid arm I84 and to said stop-pin 326. Thus the rock-shaft I80 whenrocked by depression of the cam-plate I21 may yield resiliently by wayof said spring 363, that is moved independently of the arm I84 when thelatter is blocked through blocking of the date type-bar draw-link I13 bythe lock-rods 358 at operation of a tabulating key 10. It will beobvious, Figure 10, that the yieldable connection 365 is similarlyconstructed to permit the escapement-jack operated arm I65 to yieldrelatively to the rock-shaft I38 when the latter is blocked throughsimilar blocking of the escapement draw-link I3I by said lock-rods 358.In Figures 10, 1'7, and 30 a unit T is shown placed on the carriage fortabulating the latter to the Invoice column, by means of a suitabledenominational tabulating key 16, preparatory to tabulating the carriagefor skipping the Date column; and a similar unit TT, see also Figure 29,is placed for arresting the Date column skipping jump of the carriage atthe first letterspace in the Description column.

The date-column-unit D is placeable anywhere along the carriage fordifferent locations of the Date column on the work-sheet. Figure 18represents said unit D placed for printing the date at the start of aline of typing and further represents the carriage as having reached theextreme of its return movement and ready to take the usual drop backstep after banking against the margin-stop 269, diagrammaticallyindicated, Figure 18, a suitable form of said margin stop andco-operative stop on the carriage being shown in Patent 1,835,776 toHelmond, dated December 8, 1931. At the end of said dropback step, thetappet I38 may have partly or fully traversed the escapement-controllingjack I28. In the former case, said jack I28 will be operated to advancethe carriage substantially as hereinbefore described preparatory todepression of the date type-bar controlling cam-plate I21 by the tappetI16; while in the latter case said cam-plate I21 will be depressedimmediately for resulting immediate operation of the date type-bar IIIat the end of s id drop-back step; it being understood that followingthe date typebar operation the secondary escapement-controlling tappetI96 comes into play to advance the carriage to bring the first columndate imprint clear of the printing point represented by the center typeguide 58. The carriage may also be letter spaced by means of the usualspace-key, not shown, or tabulated from the drop-back position followingthe carriage return, in order to bring the date-unit D into play forprinting the date at the beginning of a line.

The date-type bar iII, Figures 23-27, includes a type-carrying-uppermember 366 that, for convenience in changing the type-slugs or insertH3, is separable from a lower member 361 that remains in thetype-bar-mounting segment 38, said lower member being permanentlyconnected to the companion bell-crank II8. Said upper member 366 has alongitudinal slot 368 forming spaced legs 369; and said lower member 361has slots 310 along opposite edges thereof to form a web section 31Ifitting said upper member slot 368 and to also form side walls 312abutting said legs 369, to prevent relative lateral displacement of saidupper and lower members 366, 361. The lower member 861 may be reduced inthickness at its lower-end part, that is, below the shoulder 313, to fitthe segment slot II4. For preventing the legs 369 of the upper member366 from spreading and causing objectionable looseness of the latter, acleat 315 forms abutments 316 for engaging the outer edges of said legs369, as at 314, to prevent said spreading of the latter, and ispreferably fastened to said lower member 361 as by a rivet 311. The slot318 may end in a slope or flare 363. The lower end of the leg 369 of theupper type bar member 366 may be confined or wedged between said flare363 and the abutment 316 of the cleat 315 to conduce to holding saidupper member 366, and companion lower member 361 together rigidly. Saidrivet 311 also secures a flat spring 318 which mounts and keeps alock-stud 319 normally in position to engage notches 380 in the sides ofthe upper-member slot 368, to interlock said upper and lower members366, 361. Said stud 319 passes through a suitable hole in the lowermember 361 and has a reduced neck 38I over which said upper member 366may pass, for removal or replacement upon moving said stud 319 endwiseand incidentally pressing said flat spring 318 outwardly by means of afinger-piece 382 on said stud 319. Said upper member 361 may be struckup from a sheet metal blank to form a box or socket 383 for thedate-type II3, said blank being arranged to afford a top 384, bottom385, sides 386, 381, and back 388 for said box; the sides 381 extendingdownwardly and being bent as at 389 to form a 'stem 396, inclusive ofthe legs 369 of said upper member 366. A type-end-seating block or rod39I sufficiently long to afford an abutment for the forward ends of theseveral types I I3 is provided in said box 383 and abuts the back 388 ofthe latter as in Figure 26. A bail-like clip 392, formed preferably ofspring wire, includes a type-retaining cross-piece 393 that engages theshoulder forming side of a notch 394 provided in each type-slug II3,said clip also including side arms 395 for attachment to the type-box383. Said side arms 395 may have ends 396 bent inwardly for hinging theclip to the type-box, whereby the clip is swingable between thetyperetaining position, Figures 23-26, and the typereleasing positionshown by the dot-and-dash outline of the clip in Figure 26. Theturned-in hinging ends 396 of the side arms are received in holes 398 inthe type-box and such holes may extend into the type-end seating block39I as shown in Figure 26. Said holes are shown oversize as comparedwith said hinging ends 396, to facilitate removal or replacement of theclip 392 in the type-bar.

The clip 392 is normally held in type-retaining position by detent knobsor points 391 provided on the sides of the type-box 383 to engage theside arms 395 of the clip; it being understood that said side arms willyield resiliently to override said detents 391 when it is desired tomove the clip between the type-holding and type-releasing positions.seen in Figure 26. The clip side arms 395 are bent as at 399 so that inthe normal position of the clip they rest against the upper sides of thedetents 391. n the effective position of the clip said detents tend tocam the side arms 395 upwardly and cause the clip cross-piece 393 toreact against the shoulderforming sides of the notches 394 of the typesII3 so as to hold the latter against the type-end seating block 39I. Theupward camming pressure of the detents 391 upon the clip also tends toshorten the side-arms 395 by tending to increase the bends 399, therebyconducing to cause the clip 392 to hold the types securely in the box383.

The outer two of the three types II3 have each a lateral outwardprojection 400, while the middle type has straight sides. This, inconjunction with the notches 394, provides against improper relativeplacement of the types in the box 383; it being noted also that thenotches 394 are readily visible in that they are outside of said box383.

Operation of the date-type-bar III may also be effected manually. Forthis purpose the datetype-lever II1 extends forwardly to the typewriterkeyboard, Figure 1, and is provided thereat with a finger-key MI; andthe link I has a pin-and-slot connection 402 to said date-typing lever II1 to permit manual date type-operating depression of the latterindependently of the train I13-I15 by which the snatch-roll I32 operates said date-type lever II1. A face 403 of the upper member 366 ofthe date type-bar III strikesthe stop-anvil 52 of the segment 38 toarrest the date type-bar printing stroke so as to cause the datetype-bar to print by whip action of its upper part.

The operation of the machine will be understood in detail from theforegoing description and may be summarized as follows with reference,by way of example, to the work-sheet 90, Figure 10.

At the typing of an amount in the Old balance column the computing unitC, the first from the left, Figure 10, on the carriage, co-operates toindex said amount in one or more predetermined sets of register-bars 16,depending on the provision of register-selecting teeth 81. Said unit Cmay also have a column-stop 4I0, Figure 17, for tabulating the carriageto said Old balance column upon operation of a selected denominationtabulating key 10. After typing the Old balance the machine is cycled,as by pressing the cycling key 339, to enter the Old balance in thepredetermined register or registers.

The carriage is then advanced to the Invoice column, as by pressing theappropriate denomination tabulating key 10, there being provided for theInvoice columnthe colu rnn unit T, Figure 10, on the carriage having acolumn-stop 405 but no register-controlling teeth 81 or 9I.

At the carriage letter-feeding step which follows the typing of the lastInvoice numeral, the Date" column-unit D on the carriage comes into playin that the tappet I30 thereof depresses the escapement controlling jackI28, as in Figure '1, thereby, through the hereinbefore describedconnections, rocking the lever I40 to the Figure 4 position to connectthe escapementoperating draw-link I3I to the rotating poweroperatedsnatch-roll I32. The resulting rearward movement of said link I3I bysaid snatchroll rocks the escapement rocker 51 clockwise; said draw-linkI3I becoming disconnected from the snatch-roll I32-as it encounters thecamnose I51. The momentum of a fly weight 406,

Figure 4, which may be provided on the lever I43 connected to saiddraw-link I3I, insures completion, independently of the snatch-roll I32,

of the rearward stroke. of said draw-link, it being noted that saiddraw-link I3I may be disconnected from said snatch-roll, by the camnoseI51, a little before the completion of said rearward stroke. Followingdisconnection of the draw-link I 3I from the snatch-roll and thecompletion of its rearward stroke, the spring I58 moves said draw-linkforwardly again thereby causing the escapement rocker 51, aided by itsspring 62, to turn counter-clockwise; it being understood that thiscounter-clockwise rocking of said rocker 51 following the firstdescribed clockwise rocking of the latter causes, in cooperation withthe escapement wheel 60 and carriage spring motor 61, the carriage toadvance a letter-feeding step.

In the meantime the jack I28 remains depressed, and therefore the tabI42 of the drawlink controlling lever I40 remains elevated by reason ofthe dwell I30 of the tappet I30 on the- Date column unit D on thecarriage; and it results that the draw-link I3I, as it is urged by thespring I58 to complete its forward movement is at the same time cammedor deflected upwardly into re-engagement with the snatch-roll I32 whenthe cam-edge I59 of said draw-link I3I encounters said elevated tab I42,this being apparent in Figure 5 which shows the forwardly movingdraw-link I3I about to become cammed upwardly again into engagement withsaid snatchroll. I32.

At said reconnection of the draw-link I3I to the snatch-roll I 32 thecarriage-feeding operation is repeated; and further repetitions followand end with the letter-feeding step in which the tappet dwell I30ending at the edge I30 leaves the depressed jack I28 whereupon thelatter and its train to the lever I40 become restored and releases thedraw-link I3I and its train. The parts now are in the position of Figure10 wherein the Date column of the work-sheet 90 is shown in position toreceive the date-imprint.

-Thus the described repeated operations of the scapement automaticallyadvance the carriage step by step to bring the work-sheet to the Figure10 position following the printing of the last Invoice numeral.

And by the last carriage step, which releases the jack I28 and positionsthe work-sheet 90 to receive the date-imprint, the tappet I16 of theDate column unit D on the carriage has come into play and depressed thedate type-bar controlling cam-plate I21 as in Figure 10 thereby, bymeans of the hereinbefore described connections from said cam-plate I21causing the date typebar draw-link I13 to become elevated and connectedwith therotating snatch-roll I32. The resulting rearward stroke of saiddate type-bar draw-link I13 rocks the lever I14 to depress the datetype-bar lever H1 and swing the date typebar III to the platen to print.By the time the date type-bar I II reaches the platen, its drawlink I13will have become disconnected from the snatch-roll I32, by means of thecam-nose I51, as seen in Figure 6 so that following the dateimprint thetype-bar III is free to rebound. At the printing and rebound strokes ofthe date type-bar I I I the heel 55 of the latter co-operates with theescapement universal bar 54 and the escapement devices to move thecarriage a letterspace step following the date-imprint. By said latterstep the secondary escapement-co'ntrolling tappet I96 of the Date columnunit D on the carriage comes into play to depress theescapement-controlling jack I28 and thereby ad-

